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F. LEADBEATERV ALVE. APPLICATION FILED ,wnm, 1912v 1,076,895, Patented 0c. 28, 1913.

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STATES PATENT QFFEE.

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Patented Oct. 28, 19I3.

Application filed June 4t, 191%. Serial Ito-741L484.

at Detroit, county of WaynegStateof Michian have invented a certain newand useful mprovement in. Valves, and declare the following to be ahull, clear, tion of the same, such as will enable others skilled in theart to which it pertains to reference being had to the accompanyingdrawings, which form a part of this specification. k

My invention relates to an improvement in valves, shown in theaccompanying draw ings and more articularly set forth in the followingspecification and claims. My invention provides for the elimination ofthe usual. stufling box packine around the valve stem, a steam cured byproviding the valve stem With a disk admired to be drawn to its seat inthe Wall of the valve bonnet, the disl' providing an extended surfacealong the stem so constructed and arraucd that it may be forced intointimate relation therewith.

Another feature of the invention consists in jointing the stem adjacentto the -cl-isk whereby any lateral movement of the valve stem resultingfrom the operation of the handle controlling the stem, will not causethe disk to tilt and thuspermit the steam to esca e along the stem whichmay result in scal ing the hand of the operator.

Another feature of the invention consists in providing a thimble sleevedon the valve stem having a scnew-threadcd engagement With the valvebonnet, aspringbeing housed Within the thimble one end ollvvhich hearsagainst the Wall of the thimhle and theother against a shoulder carriedby the valvestcm whereby upon adjusting the thlinble the ten sion of thespring may be regulated. to force the dish carried by the valve stemagainst its seat in the valve bonnet-,-the construe tion being such thatthe tension of the spring may be adjusted Without removing any oi theparts.

Other advantages and improvements vvill hereafter appear.

In the d'-.'avvings accompanying this specificationz-dfigure 1 is acentral sectional view through the valve. with parts broken away and inelevation. Fig. 2 is a detail view of the connecting portion of thevalve stem, partly in elevation. and in section to and exactclescriptight joint sing se-- {more clearly Show the construction. Fig.3 is a fragmentary detailview, with parts in section, showing amodification in which a shoulder is secured to the stem against whichone end of the spring sleeved within the thimble hears. Referringnow tothe letters of reference {glanced upon the drawings :A denotes the ody.o'fi the valve; B its seat; C the valve bonnet having the usualscrewthteadcd connection. with the valve body.

indicates the upper end of the valve stexnorovided with a handle Di foroperatmag-31h 2 denotes the lower part of the stem having an enlargedportion 1) provided with a socket d to receive the end.- of the upperportion of the stem.

d is a transverse pin connecting the upper and lower portions of thestem together,-- the aperture to receive the pin in one ort-ion beingpreferably larger in diameter t an the pin, as indicated at a,permitting a slight lateral movement between the parts.

D9 is a flange projecting trom the en larged portion D having anupstanding annular rim d.

G is an annular disk, preferably formed of composition or metallicpacking, sleeved on'the stem and housed Within the upstandingrim of theflange D (5 is an annular ll-shaped rib from the flange 1) into a recessprovided for its reception in the dish: G.

The upper wall of the disk G near its outer periphery, is formed with aflanged projecting the inner wall of projecting flange portion 0 withthe stem.

.E indicates a valve, and E formed of suitable material.

threaded engagement with the lower end of the valve stem D it beingfreeto reciprocate 'on the stem but held against rotation by guides cprojecting from the inner Wall of the bonnet O.

H is an annular valve surface adapted to bear against an annular G isformed With a 7 against the outer face of which the inwardly.

of the bonnet. bears to force the disk into seal ng'pontact w the valvedish,

F 18 a traveling nut having a screw thimblc having a swim; threadedengagement-with the upper part of 110 the valve stem thus providingagainst leak- I a thiinble sleeved on the stem and having a threadedengagement with the valve stem, the threads preferably running in anopposite direction to those ofthe thlmble H.

In the modification shown in Fig. 3, the adjustable'nut I is dispensedwith, a pro- 'ecting rim or flange J, carried by the stem Bing providedserving as an abutment against which the spring bears when putuhder"tension by the adjustment of the thimble Having indicated theseveral parts by reference letters, the construction and operation ofthe valve will be'readily understoodu I By operating the handle D in theusual manner, the valve may be raised or forced to its seat B throughthe action of the traveling nut F; the passage through the ports-A and Abeing thus controlled. By adjusting the nut I or the thimble H, eitherjointly or separately, the tension of the spring H may be regulated andthe disk G held upon its seat. The spring H co-acting with the nut I andthe flange portion 0 serves to force the disk G into sealing contactwith age around the stem. Should there be a slight lateral movement ofthe handle caused for example b the operator adjusting the valve, anyten eney it might have to tip the disk G would be absorbed at thejointed connection between the upper and lower portions of the valvestem,it being obvious that as the pin (Z is slightly smaller in diameterthan the aperture through which it engages one portion of the stem, aslight lat eral movement is provided for Without effecting the seatingof the disk. By forming valve formed in two parts and joined to gether,a flange integral with one portion of the stem, a disk carried by saidflange having avcone-shaped upper wall tapering toward the stem, abonnet secured to the body portion through which the stem projectshaving a flange provided; with an annular seat for the disk and adaptedtobear against the cone-shaped'upper wall of the disk to force itagainst the stem, a thimble having a screw-threaded engagement with thebonnet and provided with an aperture through which the stern projects, aspring housed within the thimble and sleeved upon the stem, and anadjustable nut engaging the stem adapted to regulate the tension of thespring.

2. In a valve, a body portion provided with a valve seat, a stem foractuating the valve formed of two parts and connected together by atransverse pin, a flange integral with one portion of the stem, a diskcarried portion through which the stem projects having an annular seatto receive the disk,

screw-threaded engagement with the bonnet,

1 a spring housedwithin the thimble, and an adjustable nut engaging thestem'adapted to regulate the tension of the spring.

In testimony whereof, I sign this specification in the presence of twowitnesses.

FREDERICK LEADBEATER. Witnesses GRACE E. lVYnKoor, SAMUEL E. THOMAS.

by said flange, a bonnet secured to the body

